Battle frigid temperatures and tear down the mountain with the warmth of this 700-fill water-resistant ProDown insulated jacket that's designed to provide extreme warmth in wet, harsh conditions. To achieve warmth without bulk, chambers of 700-fill water-resistant down are placed along the front and back torso, and sleek (100 g) PrimaLoft One panels warm the sides. The ultra-durable 50D Gore Windstopper woven exterior resists abrasion and combats wind chill while remaining highly breathable.